"Unfortunately there were a lot of road closures going on in the area, so we transported the lady back to the ambulance station where she delivered a healthy baby girl," he said on the local Nine Network.

Mr Hartley said it was fortunate paramedics could reach the woman.

Only hours earlier, Cyclone Debbie had made landfall nearby after generating winds of up to 263km/h (163 mph).

Billiana's birth was widely celebrated in a state that has felt under siege in recent days.

Image copyright@ASmolShai

Image copyright@camerondickqld

'Little miracle'

Queensland Premier Annastacia Palaszczuk gave her best wishes to Billiana's parents, who have not been named.

"You know, out of all of this, to see a little miracle, I think brings a smile to a lot of faces," Ms Palaszczuk said at a press conference.

"Especially to all those people who have been working so hard overnight."

Cameron Dick, the minister overseeing Queensland's ambulance service, said Billiana was delivered by a graduate paramedic.

Image copyrightQueensland Ambulance ServiceImage caption
Billiana was delivered by a graduate paramedic, named only as Pam

Paramedics said it was hoped the family could move to a hospital later on Wednesday.